vtkLoopSubdivisionFilter Class Reference

#include <vtkLoopSubdivisionFilter.h>

Inheritance diagram for vtkLoopSubdivisionFilter:

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Collaboration diagram for vtkLoopSubdivisionFilter:

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List of all members.


Detailed Description

generate a subdivision surface using the Loop Scheme

vtkLoopSubdivisionFilter is an approximating subdivision scheme that creates four new triangles for each triangle in the mesh. The user can specify the NumberOfSubdivisions. Loop's subdivision scheme is described in: Loop, C., "Smooth Subdivision surfaces based on triangles,", Masters Thesis, University of Utah, August 1987. For a nice summary of the technique see, Hoppe, H., et. al, "Piecewise Smooth Surface Reconstruction,:, Proceedings of Siggraph 94 (Orlando, Florida, July 24-29, 1994). In COmputer Graphics Proceedings, Annual COnference Series, 1994, ACM SIGGRAPH, pp. 295-302.

The filter only operates on triangles. Users should use the vtkTriangleFilter to triangulate meshes that contain polygons or triangle strips.

The filter approximates point data using the same scheme. New triangles create at a subdivision step will have the cell data of their parent cell.

Thanks:
This work was supported by PHS Research Grant No. 1 P41 RR13218-01 from the National Center for Research Resources.
See also:
vtkApproximatingSubdivisionFilter
Tests:
vtkLoopSubdivisionFilter (Tests)

Definition at line 58 of file vtkLoopSubdivisionFilter.h.

typedef
vtkApproximatingSubdivisionFilter 
Superclass
static vtkLoopSubdivisionFilterNew ()
static int IsTypeOf (const char *type)
static vtkLoopSubdivisionFilterSafeDownCast (vtkObject *o)
virtual const char * GetClassName ()
virtual int IsA (const char *type)

Protected Member Functions

 vtkLoopSubdivisionFilter ()
 ~vtkLoopSubdivisionFilter ()
virtual int RequestData (vtkInformation *, vtkInformationVector **, vtkInformationVector *)
void GenerateSubdivisionPoints (vtkPolyData *inputDS, vtkIntArray *edgeData, vtkPoints *outputPts, vtkPointData *outputPD)
void GenerateEvenStencil (vtkIdType p1, vtkPolyData *polys, vtkIdList *stencilIds, double *weights)
void GenerateOddStencil (vtkIdType p1, vtkIdType p2, vtkPolyData *polys, vtkIdList *stencilIds, double *weights)
virtual int RequestUpdateExtent (vtkInformation *, vtkInformationVector **, vtkInformationVector *)

Member Typedef Documentation

Construct object with NumberOfSubdivisions set to 1.

Reimplemented from vtkApproximatingSubdivisionFilter.

Definition at line 64 of file vtkLoopSubdivisionFilter.h.


Constructor & Destructor Documentation

vtkLoopSubdivisionFilter::vtkLoopSubdivisionFilter (  )  [inline, protected]

Definition at line 68 of file vtkLoopSubdivisionFilter.h.

vtkLoopSubdivisionFilter::~vtkLoopSubdivisionFilter (  )  [inline, protected]

Definition at line 69 of file vtkLoopSubdivisionFilter.h.


Member Function Documentation

static vtkLoopSubdivisionFilter* vtkLoopSubdivisionFilter::New (  )  [static]

Construct object with NumberOfSubdivisions set to 1.

Reimplemented from vtkPolyDataAlgorithm.

virtual const char* vtkLoopSubdivisionFilter::GetClassName (  )  [virtual]

Construct object with NumberOfSubdivisions set to 1.

Reimplemented from vtkApproximatingSubdivisionFilter.

static int vtkLoopSubdivisionFilter::IsTypeOf ( const char *  type  )  [static]

Construct object with NumberOfSubdivisions set to 1.

Reimplemented from vtkApproximatingSubdivisionFilter.

virtual int vtkLoopSubdivisionFilter::IsA ( const char *  type  )  [virtual]

Construct object with NumberOfSubdivisions set to 1.

Reimplemented from vtkApproximatingSubdivisionFilter.

static vtkLoopSubdivisionFilter* vtkLoopSubdivisionFilter::SafeDownCast ( vtkObject o  )  [static]

Construct object with NumberOfSubdivisions set to 1.

Reimplemented from vtkApproximatingSubdivisionFilter.

virtual int vtkLoopSubdivisionFilter::RequestData ( vtkInformation request,
vtkInformationVector **  inputVector,
vtkInformationVector outputVector 
) [protected, virtual]

This is called by the superclass. This is the method you should override.

Reimplemented from vtkApproximatingSubdivisionFilter.

void vtkLoopSubdivisionFilter::GenerateSubdivisionPoints ( vtkPolyData inputDS,
vtkIntArray edgeData,
vtkPoints outputPts,
vtkPointData outputPD 
) [protected, virtual]

void vtkLoopSubdivisionFilter::GenerateEvenStencil ( vtkIdType  p1,
vtkPolyData polys,
vtkIdList stencilIds,
double *  weights 
) [protected]

void vtkLoopSubdivisionFilter::GenerateOddStencil ( vtkIdType  p1,
vtkIdType  p2,
vtkPolyData polys,
vtkIdList stencilIds,
double *  weights 
) [protected]

virtual int vtkLoopSubdivisionFilter::RequestUpdateExtent ( vtkInformation ,
vtkInformationVector **  ,
vtkInformationVector  
) [protected, virtual]

This is called by the superclass. This is the method you should override.

Reimplemented from vtkPolyDataAlgorithm.


The documentation for this class was generated from the following file:

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